Abstract
An AMG analysis of motor control was performed in 4 patients with unilateral choreic movements of sudden onset, 3 of whom presented CT scan evidence of lacunar infarcts involving the contralateral striatum. The choreic dyskinesias were correlated with EMG bursts of variable duration occurring with a random order of activation. Ballistic elbow flexion movements were performed with a normal triphasic EMG pattern, but both size and duration of the first agonist burst were increased on the affected side. Abnormalities of cerebral somatosensory evoked responses were observed in 3 patients on stimulation of the side with choreic movements.
Sommario
É stato effecttuato uno studio elettrofisiologico del controllo motorio in 4 pazienti con movimenti coreici unilaterali ad esordio acuto, 3 dei quali presentavano alla TC cerebrale infarti lacunari interessanti lo striato controlaterale. Le discinesie erano correlate a scariche EMG di durata variabile con ordine coreico di attivazione casuale. I movimenti ballistici di flessione del gomito erano caratterizzati da un normale ≪pattern≫ trifasico, ma la durata e l'ampiezza della prima scarica del muscolo agonista erano aumentate. In 3 pazienti erano presenti alterazioni dei potenziali somestesici evocati da stimolazione del lato con movimenti coreici.
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Abbruzzese, G., Brusa, G., Dall'Agata, D. et al. Electrophysiological analysis of motor control in patients with vascular hemichorea. Ital J Neuro Sci 8, 357–362 (1987). https://doi.org/10.1007/BF02335739
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DOI: https://doi.org/10.1007/BF02335739